H.R.4251 - Federal Government - To authorize the Secretary of Health and Human Services to conduct a demonstration project for administering influenza vaccine to elementary and middle school students in qualified low-income schools, and for other purposes.

Flu Vaccine Availability Act of 2008 - Directs the Secretary of Health and Human Services to conduct a demonstration project providing influenza vaccinations to all kindergarten through grade eight students in one or more low-income metropolitan schools for the purpose of studying and reducing any socioeconomic disparities in the provision of such vaccinations.